254 SMO Flanges

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254 SMO Flanges
Can high-temperature applications utilize SMO 254 flanges?

SMO 254 material is ideal for elevated temperature applications. They show exceptional corrosion resistance properties and are suitable for a wide range of temperatures. SMO 254 flanges can maintain its mechanical properties in elevated temperature conditions.

They have a high chromium and molybdenum content which enhances its oxidation resistance. SMO Grade 254 weld neck flange exhibits good resistance to creep and stress corrosion cracking. The material is quite versatile and has low co-efficient of thermal expansion.

Table of content

We are glad to announce ourselves as the India's first manufacturer of SMO 254 flanges. learn more about its welding process

Which welding technique is used for UNS S31254 blind flange?

It is crucial to apply appropriate welding technique for ASTM A182 UNS S31254 blind flange to ensure proper weld integrity. Tungsten inert gas and shielded metal arc weldings are the most common methods employed for this blind flange.

Apart from selecting the right welding procedure, you should also choose a proper filler material. Also, maintain proper shielding gas and flow rates to prevent contamination.

Rely on Regent Steel, if you are looking for ASTM A182 UNS S31254 blind and weld neck flange in Mumbai that complies with ANSI/ASME B16.5 standards, study up on pressure rating.

254 SMO Flanges

254 SMO Flanges

UNS S31254 blind flange

UNS S31254 blind flange

DIN 1.4547 slip on flange

DIN 1.4547 slip on flange

What is the DIN 1.4547 slip on flange maximum pressure rating?

The maximum pressure rating for DIN 1.4547 slip on flange depends on the flange size, design, temperature and class rating. The pressure class determines the maximum allowable working pressure that the flange is able to withstand at a given temperature.

Larger flanges typically have higher pressure ratings. Also, the gasket quality and type can have an influence on the pressure rating.

we maintain a ready stock inventory of DIN 1.4547 slip on flange ranging from ½” to 36″ in class 150 to 2500 with various face use for seawater applications.

254 smo flanges specification
254 smo flanges specification

 

254 SMO Flange Size Pressure Standard
1/2 " to 48" NB PN6 to PN64 ANSI/ASME B16.5, B16.47 Series A & B
Specification 254 SMO Flanges Class Face type
ASTM A182 | ASME SA182 150, 300, 600, 900, 1500, 2500 FF, RF, RTJ
Process 254 SMO Flanges Type
forging, casting, cutting, rolling blind, weld neck, slip on, socket weld
Discover our collection of ASME SA182 6mo socket weld and lap joint flanges and other supply options, which can be provided in customized sizes to match customer needs.
Various types of 254 smo pipe flanges
Alloy 254 weld neck flange

Alloy 254 weld neck flange

  • ASTM A182 | ASME SA182
  • 1/2 to 60 inch NB
  • ANSI/ASME B16.5
6mo socket weld flange

6mo socket weld flange

  • RF
  • FF
  • RTJ
SMO 254 lap joint flange

SMO 254 lap joint flange

  • PN6 to PN64
  • Class 150-2500
  • ANSI/ASME B 16.47 Series A & B
Is it difficult to locate plate, threaded, forged, and reducing flanges made of alloy 254 in unusual sizes? Get it from Regent Steel and check out its composition online
UNS S31254 blind flange equivalent
STANDARD SIS UNS WERKSTOFF NR. GOST JIS AFNOR EN
254 SMO Flanges 2378 S31254 1.4547 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7
DIN 1.4547 slip on flange mechanical properties
Elongation (min 2"): 35%
Tensile Strength: 98 ksi min
Hardness (Rockwell B Scale): 96 HRB max
Yield Strength: 45 ksi min
SMO grade 254 weld neck flange chemical properties
254 SMO Flanges S
Sulfur
Cu
Copper
C
Carbon
Mn
Manganese
P
Phosphorus
Si
Silicon
Cr Chromium Ni Nickel Mo
Molybdenum
N
Nitrogen
0.015 max 0.50–1.00 0.020 max 1.00 max 0.030 max 0.80 max 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.22
What makes Alloy 20 and SMO 254 flange different from one another?
  • Alloy 20 and SMO 254 have different chemical compositions. Because of this, alloy 20 shows exceptional resistance to sulphuric acid and other media. On the other hand, 6mo socket weld flange shows more resistance in chloride containing environments.
  • SMO 254 shows better high temperature performance than alloy 20 material.
  • Alloy 20 is more cost effective than 254 SMO lap joint flange.
What are the Alloy 254 weld neck flange testing requirements?

SMO Grade 254 weld neck flange testing requirements would include:

  • Visual inspection to assess if there are any surface defects or damages caused to the flange.
  • Dimensional inspection ensures that the flange meets the required dimensions and tolerances.
  • NDTs detect surface & subsurface defects along with any irregularities.
  • Pressure testing is conducted to detect any leaks and ensure structural integrity of the flange.
What are the most typical 254 SMO Flanges types? what are its advantages
  • Weld neck flanges are for high temperature and pressure applications. They enable a smooth transition and reduce the risk of turbulence and erosion.
  • Slip on flanges are easy to align and they are used for low pressure applications.
  • Socket weld flanges are made for small pipe sizes and low pressure applications. They are easy to weld and offer good sealing.
  • UNS S31254 threaded flange is used for non-critical, low pressure application for easy assembling and disassembling.
Pressure class 150 254 smo spectacle blind flange dimensions
254 SMO NPS Inside Ø
B
Outside Ø
A
THK
t
Center Line
C
Web Width
W
3/4 21 54 3 70 38
1/2 16 45 3 60 38
1.1/4 42 73 6.4 90 38
1 27 64 3 80 38
1.1/2 48 83 6.4 100 38
2.1/2 73 107 6.4 140 51
2 61 102 6.4 120 51
3 89 133 6.4 150 64
4 114 172 9.7 190 64
3.1/2 102 159 9.7 175 64
5 141 194 9.7 215 76
8 219 276 12.7 300 76
6 168 219 12.7 240 76
10 273 337 15.7 360 102
14 356 448 19.1 475 108
12 324 406 19.1 430 102
16 406 511 22.4 460 108
20 508 603 28.4 635 121
18 457 546 25.4 580 114
24 610 714 31.8 750 140
SMO 254 forged flanges weight chart
254 SMO Flanges Class 150
NPS Lap
Joint
Thd Slip
On
Socket
Weld
Weld
Neck
Blind
3/4 0.9 0.9 0.9 0.9 0.9 0.9
1/2 0.5 0.5 0.5 0.9 0.9 0.9
1.4 1.4 1.4 1.4 1.4 1.4
1 0.9 0.9 0.9 0.9 1.4 0.9
2 2.3 2.3 2.3 2.3 2.7 2.3
1.4 1.4 1.4 1.4 1.8 1.8
3.6 3.6 3.6 3.6 4.5 3.2
4 5.4 4 4 5.4 5.9
3 4.1 4.1 4.1 4.1 5.2 4.1
4 5.9 5.9 5.9 5.9 7.4 7.7
6 8.6 8.6 8.6 8.6 11.7 12.2
5 6.8 6.8 6.8 6.8 9.5 9
8 13.5 13.5 13.5 13.5 18.9 21.2
12 28.8 28.8 28.8 28.8 39.6 55.4
10 19.4 19.4 19.4 19.4 24.3 31.5
14 47.3 40.5 40.5 40.5 51.3 63
18 72 58.5 58.5 58.5 74.3 99
16 63 44.1 47.7 44.1 63 81
22 110.3 83.3 83.3 83.3 101.3 159.8
20 87.8 74.3 74.3 74.3 88.7 128.3
24 123.8 99 99 99 120.6 193.5
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